Phone numbers in Los Banos, California
Los Banos has 19 phone prefixes in area codes 209, 350.
Biggest holders: T-Mobile (including Sprint), AT&T Mobility, AT&T (local phone). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 47%
- Local phone company 21%
- Internet / business phone carrier 26%
- Paging service 5%
Every prefix in Los Banos
Search the first six digits of a number in this list. If it's here, the number started in Los Banos with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 209-270 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 209-509 | Verizon Wireless | Mobile carrier | – |
| 209-516 | American Messaging Services | Paging service | – |
| 209-519 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 209-587 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 209-592 | Bandwidth | Internet / business phone carrier | 2016 |
| 209-619 | AT&T Mobility | Mobile carrier | 2020 |
| 209-675 | AT&T Mobility | Mobile carrier | – |
| 209-704 | AT&T Mobility | Mobile carrier | – |
| 209-710 | Comcast | Internet / business phone carrier | – |
| 209-737 | CenturyLink / Lumen | Local phone company | 2013 |
| 209-752 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 209-826 | AT&T (local phone) | Local phone company | – |
| 209-827 | AT&T (local phone) | Local phone company | – |
| 209-828 | Onvoy | Internet / business phone carrier | – |
| 209-829 | AT&T (local phone) | Local phone company | – |
| 209-979 | Verizon Wireless | Mobile carrier | – |
| 350-225 | Onvoy | Internet / business phone carrier | 2024 |
| 350-239 | Onvoy | Internet / business phone carrier | 2025 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.